Sheet-metal pulley.



PATENTED JA 8, 1907.

C. ILEGrI-IR. SHEET METAL PULLEY.

APPLIOATICN FILED JAN. 11. 1906. I V

a snEnTs-sHnnT-L PATENTED JAN/8, 1907.

GPREGER.

SHEET METAL PULLEY.

$HEET 2.

AYPLIGATION TILED JAN. 17, 1906.

3 SHEETS- ITO-840,658. PATENTED JAN. 8, 1907.

c. REGER.

SHEET METAL PULLEY. APPLICATION FILED JAN. l7 1906.

3 SHEETS-SHEET 3.

. is a transverse section are. 840,658.

- PlGtQ'dlSClOSIII B.

. thereo UNITED ooNnAD REGER; 'OFVP PATENT oFFioE.

If II L ADELPHIA, PENNSYLVANIA.

SHEET-METAL PU LEYL; I

To all whom it may concern: M Be it known that I, OONRADREGER, a subject. of the German Emperor, and a resident of the cityof Philadelphia, State of Pennsylvania, have invented certain new and; useful Improvements in Sheet-Metal Pulleys, of Whlch the following is a full, clear, and com- My 'nvention relates ;to pulleys, and more particularly to that class of pulleys which are constructed of sheet- 'metal material, bent,' drawn, or struck up in such a manner as to give the sameli htness as well as strength.

The ob'ect "0% my invention is to so'construct suc apulley as to enable the same to be attached tothe shaft w'ithout'being passed overthe endthereof and: at the same time toenable it to have thefewest parts and to possess durability and cheapness of construction.

My invention consists in the details of construction and manner of operation set forth in the following specification and acco 1.- panying. drawings,' in Which like refer .ce characters refer to corresponding parts.

f In the drawings, Figure 1 is an elevation of,one form of my pulley. Fig. 2 is an elevation' of-the same, showing the parts spread around a-shaft, also showing'part'of the rim in section. Fig. 3 is a transverse section taken on line 3 30f Fig; 2. Fig.4 is a plan section-taken on line 4 4 of Fig. 1, but showing a part thereofbroken away. Fig. 5 is a longitudinalsection taken on line 5 5 of Fig. 3. I Fig. 6 is an elevation of a modification of my 1pulley. Fig. 7 'is a trans-v erse section ,taken online 7 7 of Fig. 6. Fig. 8 is a longitudinal section" taken online 88 of Fig; 7. F'g. 9 is a plan section taken on line 9 9'-of Fig; 6, but showing a part, thereof broken away. Fig; 10ris "an elevationfof another modification of 'my ulley', showing the same spread around a s aft. Fig. 11 is a transverse section" thereof, taken on lines 11 1-1 of Fig. 10. Fig. 12 is an elevationof another modification of my pulley; Fi' 13- thereo ,taken on inch 13.13 of Fi 1'2; Fig. 14 is a fragmentary: longitudina section taken on line 14 of Fig. 12, and -Fig. 15 is afragmentary transverse section taken on the line 15 of Fig. 13.

- Referring to Figs. 1 to 5, inclusive, the rim is representcd'by-l, which is substantially a hollow cylinder in forrri, but turned inwardly at 2- to form a bead around the peripheral. portions thereof. Within the rim and corre- Speciflcation of Letters Patent. I Application filed January 17,1905. semi Np. 2913.471.

' ink 7 is (passed therethrough'near the rim 'on Patented (Iain-8,1907.

spending to the spokes of the sameare the Webs 5 5 which are turned outwardly at their peripheral portions to form semicylindrical flanges 6 6, these-Iatterbeing in close contact with the interior surface of the rim. The circular or body portions of the'webs'5 5 are swelled outwardly away from one another,- thus forming aspace orjchamber between them. Within 'thlsspa'ce or chamber are located the'bearing c'ylinders 9 9, the same hav-. ing flanges 9 9bolted around the apertures 5 5 of theweb. These apertures are circular. and coincide with the interior cross-section of the bearing-cylinders. The periphat- 6 6. In order to enable the pulley to spread, so that an axle may be assed into its bearings, the two webs are spit in a plane.

passing throu h one of their diameters and through one o the sides of. the rim, as shown in Fig. 2. In order to form a fulcrum pivotoint for each'of the swinging webs 5' 5, the

its close side. The ed es of the split 'por-' of the split portions'of the we part of each inturned portion overlapping the edges" of the split portions of the flanges- 6 6, as shown at 4. The rivets-3' 3"are assed A through-these overlapping edges and anges,; but not through the exterior surface of the rim, as'shown in Fig. 5, The inturned edge 2 ofthe rim does notp'ass entirely around the: inner surface of the rim, but is cut ofi'to al low the turned-in portion 3to be pressed down on the interior surface,'its inner edge 95 entire circumference of the overlapp ng por meeting the inturned edge 2, thus making the tions flush. The cylindrieal bearing portions 9 9 are madeup of two semicylindrical arts,

and each has one ed e thereof extende -o1it-' IOC wardly in the form o fa fiat plate 4 ina plane passing through the axis of the pulley.

,, These plates or flat orti'ons 4' 4 thus present a partial face-.0 thes lit section ofthe cross the outside the rim are located the boltplates 1'1,'which are bolted together by the bolts 12 12 in the manner shown in Figs; 1 and 4. 'Adjacent to i the bolts in each split portion ofthe flanges are hand-holes14 '14, through which access no may behad to the bolt heads and nuts;

Referring to Figs. 6 to 9, inclusive, WlIlCh 7 'eries of'the webs are bolted together, 'as shown tion of the rim are exten ed be end the edges v hon each side of the same and are turned-backwardly upon theinner surface of the rim, as shown at 3, a 8'- are all of the 'views of one of the modifications of my pulley, 21 represents the rim, 25

itseltand its outer edges, forming an interior lining or thickness 22 22, the nturned portions extending directly up to the webs and overlapping the flanges thereof. Between the two webs are the semicylindrical bearing portions 21 21, having their cross-sections coinciding with circular orifices 22 22 in the webs. The longitudinal edges of each semicylindrical bearingportion extend upwardly and downwardly to form plates 29 29, which are in a plane parallel with the axis of the cylinder. In this modification the two flanges and the rim are split in a plane passing through the axis of the pulley the said.

pulley being separated into two separate parts. On the outside of each of the faces 29 29 are the bolt-plates 31 31, through which are passed the bolts 32 32 when the two sections of the pulley are to be fastened together. The edges of the rim adjacent to their split portions are extended on each side of the webs and bent back upon themselves in a similar manner to that explained in preceding modificatin. In this modification, however, the extended outside portion of the rim necessarilyoverlaps the previously-described inturned portion 22, which rurs around the interior of the rim to the edge where the extending portion is' turned back. This turned-back portion 23 also overlaps the' cylindrical flange, as shown at 24, these overlapping portions presenting a quadru 'le thickness of metal, consisting of the outsi e rim 21, the web-flange '26, the irturned portion of the rim 22, and the last-described 'inturned edge 24.

This construction is of course duplicated upon the opposite split portion-of the pulley. Hand-holes 34 are cut in p one-sideof the webs to give access to the bolts.

Figs. 10' and 11 illustrate another modification of my invention, in which41 is the rim ol} the pulley, 45 45' the-webs, and 46 the semicylindrical bearings. The webs 45 45 are turned outwardly at their peripheral porthroughone side of the rim and through the webs-the latter being held on a fulcrumlink 49, like link 7. (Shown in Fig. 1.) The edges along the split portion of the rim are .,-of the rim.

turned back on themselves, overlapping the inner surface of the rim, as shown at 42. The said overlapping portions also overlap the seniicylindrical flanges 45 45", as shown at 43 43, and are bolted thereto, as shown at 48 48. 'l'he two pair of split portions of the webs may be bolted together over a shaft by passing bolts through the holes 47 47.

In Figs. 12 and 13 I disclose another modification of my invention, in which 51 represents the r m, 55 55 the webs, and 56 56 the seinicylindrical flanges thereof. To thereutral apertures in the cylindrical flanges are bolted semieylindrical bearings 57 57 in a like manner to that of the hearings in the previous modification. 'Ihc rim 51 is bent upon itself at its outer edges, overlappim itii interior surface, as shownat 52, its edges meeting the edges of the flanges 56 56. This pulley is split in a like manner to that shown in Figs. 6 to 9, inclusive, the edges of the rim along the split portions being folded back upon themselves, overlapping its interior surface, as shown at 53, and also the overlapping portions of the rim. and firstmentioned inturned edge 52, the overlapping portions being riveted together inthe same manner as the overlapping portions in the modifications shown in Figs. 6 to 9, inclusive. In this modification -the turned-back portions 52 of the rim extend inwardly until they meet the outer edges of the flanges 56, thus forming a flush surface. The turned back portions 53 also terminate at the outer edges of the flanges instead of overlapping the same. In these two nioditieatimis (illustrated in Figs. 10 to 14, inclusive) the semicylindrical bearing-pieces are made of cast-iron instead of sheet metal, as shown in the other modification, it sometimes being more desirable to have a cast instead of a sheet metal bearing,

especially in case of a heavy load on the pulley.

From the above-described constructions it may be seen that I have produced a light, strong, and durable pulley out of sheet metal, using a very few parts. By bending and overlapping the same in the peculiar manner above described, I produce two or more thicknesses in proportion to the strain borne on the various parts. When it is desired to place one or more pulleys in position on an axle, instead of inserting the shaft longitudinally through the central hearing I spread the pulley in the manneralready described and bring the two sprtad portions around the axle and boltthe sdiue together through the adacent bolt-plateaus hereinabove described. When the pulley is merely split along one side of the rim, I then bring it down as traddle of the shaft until the latter is opposite the bearing, when I pull the two spread parts togetheragainst the resiliency This has a tendency, on account otthe link 49 acting as a fulcrum, to spring the flange portions adjacent to the fulcrum have used against the interior of the rim, thus holding the same in tight frictional engagement. I Wish it distinctly understood that I may interchange any of the axle-bearing parts of the several modifications'shown and that the turned-backportions of the outer peri hery of the rim andthe s lit edges thereo may overlap the outward y-extending flanges'of the Webs or terminate at the ed es thereof, as is shown in Figs. 12 to 15, inclusive, and, further, I do not confine myself to the bearing-sleeves illustrated and described, but reters Patent, is

1. Aisheet-metal pulley comprising a rim,

a pair of webs having alined apertures, the said rim and Webs being split in a plane pass.- in through the axis of the rim, to permit an ax e to be passed therethrough into the said web, each semicylindrical apertures, means for clamping said split portlons together, a semicylindrieal bearm sleeve attached to each split portion of eac 1 ortion terminating in a flat flange paralle with the axis of the rim, and bolt-plates extending across the s ace between the two webs, the said boltp ates having their extremities resting on their respective flanges and bolted thereto by bolts and nuts.

2. Asheet-metal pulley comprising a rim, a pair of Webs having alined apertures, the said rim and webs being split in a plane pass ing through the axis of the rim, to perm1t an axle-to be passed therethrough into the apertures, means for clamping said split portions together, asemic lindrical bearing-sleeve at- 'tached to each sp it portion of each web, each semicylindrical portion terminating in a fiat flange parallel with the axis of therim, boltplates extending across the space between the two webs, the said bolt-plates having their extremities resting on their respective flanges and bolted thereto by bolts and nuts, and the said webs having hand-holes therein to give access to the bolt heads.

3. A sheet-metal pulley comprising a'rim, a pair of webs having alined apertures, the said rim and webs being split in a plane passing through the axis of the rim, to permit an axle to be passed therethrough into said apertures, the edges of the rim adjacent to said split portion being turned back upon themselves.

4. A sheet-metal pulley comprising a rim, a pair of apertured webs, having their peripheral portions turned outwardly into flanges in contact with the interior surface of therim, the said rim and webs being split in a plane passing through the axis of the rim,'to

permit an axle to be passed therethrough into'the apertures, the edges of the rim adjacent to said split portion being extended and turned back upon themselves.

5. A sheet-metal pulley comprising a rim,

-a pair of apertured webs, having their peripheral portions turned outwardly intoflanges in contact. with the interior surface of the rim, the said rim and webs being'split in a plane passingthrough the axis of the rim,

to permit an axle to be assed therethrough into, the apertures, the e ges of the rim adjacent to said split portion being extended and turned back u on themselves tooverlap the split portion of the'flan es of the web.

6. A sheet-metal pul ey comprising a resilient rim a pair of apertured webs, the said rim and webs being split in. a plane passing through the axis of the rim to permit an axle to be passed therethrough into the said aper tures, the peripheral portions of said rim being turned back upon themselves on the interior surface of the rim, and the edges of the rim adjacent to said split portions being turned back upon themselves to overlap the inturned peripheral portions.

In witness whereof I have hereunto set my hand this 13th day of January, A. D. 1906. CONRAD REGER. \Vi tnesses:

VVrr'rEn HOLDEN, ALEXANDER PARK. 

